/Engine/Source/Developer/Localization/Public/Serialization/JsonInternationalizationManifestSerializer.h
Goes through the structured, hierarchy based, manifest data and does a non-culture specific sort on namespaces, default text, and key.
static void SortStructuredData ( [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [FStructuredEntry](API\Developer\Localization\Serialization\FStructuredEntry) > InElement )